For some reason I cannot find what I thought would be a simple answer. I am traveling internationally and want to use my iphone for wifi but do not want to incur any charges. When I take out my sim, it does NOT allow me to connect to wifi. If I turn on airplane mode, I cannot use wifi. Can someone please let me know how to get around this so I can use my wifi on my iphone 4 without having a sim card in the phone? It is activated and jailbroken. Thanks.